Excessive Heat — San Bernardino County-upper Colorado River Valley, California

2021-06-14 to 2021-06-20 · San Bernardino County-upper Colorado River Valley, California

Event narrative

Excessive Heat Warning criteria were reached seven days in a row.

Wider weather episode

Strong, nearly stationary high pressure led to a week long, intense heat wave with many temperature records broken.

Source: NOAA Storm Events Database, event_id 969707. Narrative written by the NWS forecast office that issued the report.